Disk sizes and manufacturer/model in session group filters, percentage free, SMART status, etc.

We filter systems by OS, memory size, memory free.

It would be very useful to filter a group by disk % free to know if we should try to cleanup temp files/etc, let our clients know it is time to upgrade disks.

Disk manufacturer/model would also be useful.

SMART status would be very useful, help us detect predictive failures.